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Effects of SiO2 Filler in the Shell and Wood Fiber in the Core on the Thermal Expansion of Core–Shell Wood/Polyethylene Composites
- Source :
- Polymers, Polymers, Vol 12, Iss 2570, p 2570 (2020), Volume 12, Issue 11
- Publication Year :
- 2020
- Publisher :
- MDPI, 2020.
-
Abstract
- The influence of nano-silica (nSiO2) and micro-silica (mSiO2) in the shell and wood fiber filler in the core on the thermal expansion behavior of co-extruded wood/polyethylene composites (Co-WPCs) was investigated to optimize the thermal expansion resistance. The cut Co-WPCs samples showed anisotropic thermal expansion, and the thermal expansion strain and linear coefficient of thermal expansion (LCTE) decreased by filling the shell layer with rigid silica, especially nSiO2. Finite element analysis indicated that the polymer-filled shell was mainly responsible for the thermal expansion. The entire Co-WPCs samples exhibited a lower thermal expansion strain than the cut Co-WPCs samples due to protection by the shell. Increasing the wood fiber content in the core significantly decreased the thermal expansion strain and LCTE of the Co-WPCs. The Co-WPCs whose core layer was filled with 70% wood fiber exhibited the greatest anisotropic thermal expansion.
- Subjects :
- 0106 biological sciences
Materials science
Polymers and Plastics
Shell (structure)
core–shell structure
02 engineering and technology
engineering.material
01 natural sciences
wood plastic composites
Thermal expansion
Article
lcsh:QD241-441
chemistry.chemical_compound
lcsh:Organic chemistry
010608 biotechnology
Filler (materials)
Fiber
Composite material
Anisotropy
thermal expansion
co-extrusion
General Chemistry
Polyethylene
021001 nanoscience & nanotechnology
Core (optical fiber)
chemistry
silica
engineering
0210 nano-technology
Layer (electronics)
Subjects
Details
- Language :
- English
- ISSN :
- 20734360
- Volume :
- 12
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- Polymers
- Accession number :
- edsair.doi.dedup.....d544e28051dd5ec1551be973b3e43e30